Is Air Quality Chicago down?
Up
No, Air Quality Chicago is up.
It passed its latest check 10 h ago in 331 ms, and every check since we started checking it on 11 Oct 2026.
Latest check
- Last check
- 10 h ago (27 Oct 2026, 02:25 UTC)
- Response time
- 331 ms (typical 437 ms)
- Next check
- Due now
- How often
- About every 4 hours over the last 7 days
Uptime
Uptime is the share of checks that passed. We checked it about every 4 hours over the last 7 days.
Outages in the last 30 days
No outages in the last 30 days. An outage starts when two checks in a row fail and ends at the next passing check.
Recent checks
| When | Result | HTTP | Time |
|---|---|---|---|
| 27 Oct 2026, 02:25 UTC | Passed | 402 | 331 ms |
| 26 Oct 2026, 14:08 UTC | Passed | 402 | 445 ms |
| 26 Oct 2026, 02:23 UTC | Passed | 402 | 332 ms |
| 25 Oct 2026, 14:50 UTC | Passed | 402 | 411 ms |
| 25 Oct 2026, 02:28 UTC | Passed | 402 | 90 ms |
| 24 Oct 2026, 15:14 UTC | Passed | 402 | 404 ms |
| 24 Oct 2026, 04:28 UTC | Passed | 402 | 397 ms |
| 23 Oct 2026, 17:57 UTC | Passed | 402 | 408 ms |
| 23 Oct 2026, 07:33 UTC | Passed | 402 | 466 ms |
| 22 Oct 2026, 21:50 UTC | Passed | 402 | 80 ms |
Price and payment address
- Price
- $0.01 per call on Base
- Pays to
- 0xFC24…eBB3
No price or payment address changes recorded.
How we check
Up means the endpoint answered an unpaid test request with a valid x402 payment challenge. We never pay, so we can't see whether the paid response works.
Checks come from our server, about every 4 hours for this listing over the last 7 days. A failure can also mean the service blocks our checks. Two failed checks in a row count as an outage, which ends at the next passing check.
If you think a check is wrong, contact hello@toolvet.app. More on how we check and score. To see what an agent gets right now, check it yourself.